What type of igneous rock is obsidian?


What type of igneous rock is obsidian?

Intrusive vs. Extrusive Rocks:

Igneous rocks can be sorted into two categories, depending on how and where they formed. Intrusive (plutonic) igneous rocks form from magma that cools below the surface. Extrusive (volcanic) rocks form from lava that cools above the Earth's surface.

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Obsidian: Definition, Properties & Uses


Chapter 5 / Lesson 6

Learn about obsidian rock. Find out how obsidian is formed and what obsidian is made of. Gain an understanding of obsidian properties, types of obsidian, and obsidian uses.

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